Self-interfering wavepackets

Self-interfering wavepackets

Phys. Rev. Lett. 116, 026401 (2016) We study the propagation of non-interacting polariton wavepackets. We show how two qualitatively different concepts of mass that arise from the peculiar polariton dispersion lead to a new type of particle-like object from non-interacting fields---much like self-ac...

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Bibliographic Details
Main Authors: Colas, David, Laussy, Fabrice
Format: Journal Article
Language:English
Published: 09-07-2015
Subjects:
Physics - Mesoscale and Nanoscale Physics
Online Access:Get full text
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Summary:Phys. Rev. Lett. 116, 026401 (2016) We study the propagation of non-interacting polariton wavepackets. We show how two qualitatively different concepts of mass that arise from the peculiar polariton dispersion lead to a new type of particle-like object from non-interacting fields---much like self-accelerating beams---shaped by the Rabi coupling out of Gaussian initial states. A divergence and change of sign of the diffusive mass results in a "mass wall" on which polariton wavepackets bounce back. Together with the Rabi dynamics, this yield propagation of ultrafast subpackets and ordering of a spacetime crystal.
DOI:10.48550/arxiv.1507.02676